I've got a problem with the central locking on my Liberty 3.0R-B, in that the rear left door occasionally does not lock or unlock. It might take 2 or 3 presses of the button for it to eventually lock. This happens probably 20% of the time, and the other 80% of the time the door locks and unlocks fine.
Subaru refused to fix it under warranty because a few of the services were undertaken at slightly longer than 6 months (although always well under 12,500kms). Strange, I didn't know changing the oil would help keep the central locking system working?
Anyway, I was just wondering if anyone knew what the cause of this problem might be and how I might undergo fixing it?

